High-frequency therapeutical apparatus.



W. KLEINBERG.

' HIGH FREQUENCY THERAPEUTICAL APPARATUS. APPLICATION FILED Aue.3!, ms.

1,230,905. Patented June 26. 1917.

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WITNESSES INVENTOH I 5 87 Q: Q

A 7TOR/VEYS m: Ivonms Prrgks cp ,Momuma, wAsMmaw UNITED STATES PATENT oEEicE.

WILLIAM KLEINBERG, OF NEW YORK, N. Y.

HIGH-FREQUENCY THERAPEUTIC AL APPARATUS.

Application filed August 31, 1915.

To all whom it may concern:

Be it known that I, \VILLIAM KLEiNBERc, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved High-F 'equency 'Iherapeutimil Apparatus, of which the following is a full, clear and exact description.

This invention relates to high frequency apparatus, such as is used for electro-therapeutical treatments, although the invention is not necessarily limited to this class of devices.

The iuventiim has for its general objects to improve the construction of circuit make and break devices for high frequency induction coils and all other de ices where an oscillatory, a make and break. or any movable contact is employed; so as to be reliable and efiicient in use. generative of more power, and capable of more ready adjustment for varying the strength of the generated current without causing any increased sparking at the contacts, with the accompanying loss of power and'wear of the contact surfaces.

A more specific object of the invention is the provision of a relatively stationary contact associated with the contact of the vibrator. whereby the contact surfaces are always maintained in fixed relation irrespective of the adjustment of the relatively fixed contact, the advantage being that sparking between the contacts is reduced to a minimum. and a maximum current is obtainable at all times. these advantages being due to the fact that the relatively fixed contact is mounted on a resilient support or spring in such a manner that relative turning of this contact with respect to the vibrator contact is prevented. and the fixed contact is adjusted by means of a screw which has a pointed. fiat, or round. end engaging a cor respondingly shaped seat on the contactcarrying spring. The contact-carrying spring is connected with one side of the circuit while the vibrator is connected with the other side, and consequently the adjusting screw does not act as a conveyor of current, as is now commonly the case with high frequency apparatus of this character. The screw does not therefore become highly heated and is always easy to adjust. Since the screw does not form the fixed contact with which the contact vibrator engages, as

Specification of Letters Patent.

Patented June 26, 1917.

Serial No. 48,175.

in common forms of vibrating induction coils, it is no longer necessary to provide clamping means for preventing the screw from turning, as there is now no tendency for the vibrator to cause any'rotation of the screw by the hammer-blow action, and becauseof the absence of this tendency there is no need of a clamp for the usual adjusting screw. Heretofore this clamping has been a. source of much annoyance, as the intense heat due to the flow of current and the sparking has made the fingering of the clamping means to loosen and tighten it practically impossible. These difficulties are overcome by the construction herein disclosed.

For a more complete understanding of the invention reference is to be had to the following description and claim taken in connection with the accompanying drawings, which illustrate certain embodiments of the invention and wherein similar characters of reference indicate corresponding parts in all the views, in which Figure 1 is a plan view of a portion of the induction coil used in a portable therap'eutical high frequency generator,

Fig. 2 is a vertical section taken on the line 22, Fig. 1;

Fig. 3 is a perspective view of the contact carrying spring;

Fig. 4 is a view similar to Fig. 1, showing a modified arrangement of the contactcarrying spring: and

Fig. 5 is a perspective view of the contact-carrying spring shown in Fig. l.

Referring to the drawing, A designates the case or box of the instrument-and B a portion of the induction coil which forms a part of the instrumentalities thatare utilized in the production of a high frequency current. The induction coil has associated with it the usual vibrator C that comprises a leaf spring 1 carrying an armature 2 which is adjacent the pole of the induction coil. On the side of the spring opposite from the coil is a contact 3 with which is associated a relatively fixed contact a carried by a support 5. This support is in the form of a. resilient metal strip having its ends 6 bent laterally and fastened to the head or plate 7 at the end of the induction coil. The contact 4 is fastened in any suitable manner to the spring 5, as, for instance, L;

by a screw 8, the shank of which passes through an opening 9 in the spring and screws into the contact, while the head of the screw is formed with a. socket 10 for receiving the pointed end 11 ofan adjust ing screw 12. This screw is threaded in a supporting post 13 and has ahead or wheel 1 1 which is disposed out ofthe casing A, whereby the user can adjust the instrument for producing currents of different strength;

Obviously by turning the screw so as to move the contact at toward the induction coil, the contact 4 will engage the contact 5, and any degree of tension can be placed on the spring 1 of the vibrator, the varying of the tension serving to vary the strength of the high frequency current. The surfaces of the contacts 3 and at are provided with silver or other non-corroding material, and as these contacts do not relatively turn, the opposed surfaces maintain their complementary relation, and consequently sparking during the rapid vibration'of the vibrator 1 is reduced to a minimum. As the screw 12 is turned there is no turning effect on the contact 1-, the latter moving simply in a direction toward or from the induction coil. The blows exerted by the contact 3 of the vibrator on the contact t have no rotative effect on the screw 12, so that the adjustment of the same will not change and no clamping means is required. The contacts 3 and 1- are connected in circuit by one side 15 of the circuit being connected with the base 16 of the vibrator spring, and the other side 17 being connected with one end of the contact-carrying spring hen the contacts 3 and 4 are engaged, as shown in F 2, the circuit through the coil is completed, whereby the magnetism generated attracts the armature 2 and separates the contact 3 from the contact 4, whereby the circuit is broken. The magnetism falling permits the armature to move away from the pole of the coil, due to the tension of the spring 1, and the circuit is again completed by the contact 3 engaging the contact 4. This making: and breaking of the circuit occurs with very great rapidity, as will be well understood. On the spring 12 is an arm 18, as shown in Fig. 1, which is fastenedto the head 14 of the screw, and in the path-of the outer end of this arm is a. fixed stop 19011 the casing A, whereby the rotation of the screw is limited to a single turn which Is sufiicient to effect the full range of adjustment of the contact 4 for the production of high frequency current within the limitsdesired for therapeutical. treatment.

In the modification shown in Figs. 4 and 5 the spring 5 which carries the contact 1 is mounted on the post 13 which carries the adjusting screw 12 Otherwise the construction is the same as that shown in Figs. 1 and 2. @ther means may be employed for mounting the relatively fixed contact so that it will not turn, but is capable of adjustment toward and from the vibrator for adjusting the instrument to produce currents of different strength.

From the foregoing description taken in connection with the accompanying drawings, the advantages of the construction and method of operation will be readily understood by those skilled in the art to which the invention appei'tains, and while I have described the principle of operation, together with the apparatus which I now consider to be the best embodiment thereof, I desire to have it understood that the apparatus shown is merely illustrative and an induction coil, a vibratorincluding a contact. a resilient support, a contact thereon,

a rigid support, a screw mounted on the rigid support and operatively related to the resilient support to adjust the position of the contacts, and means for connecting the resilient support in the electric circuit of' the induction coil independently of the rigid support.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

TVILLIAM KLEINBERG.

Vitnesses J. G. LARSEN, G. H. EMsLiE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

7 Washington, D. C.

and desire to secure by 85 

